INQUISAL 20936
INSTITUTO DE QUIMICA DE SAN LUIS "DR. ROBERTO ANTONIO OLSINA"
Unidad Ejecutora - UE
artículos
Título:
On-line preconcentration and analysis of zinc in water by flow injection-knotted reactor: Application to geological and environmental exploration
Autor/es:
SALONIA, J.A., CERUTTI, E.S., MARTINEZ, L.D., TURIEL, J.L.F., GÁSQUEZ, J.A.
Revista:
INSTRUMENTATION SCIENCE AND TECHNOLOGY
Editorial:
Francis&Taylor
Referencias:
Año: 2008 vol. 36 p. 302 - 309
ISSN:
1073-9149
Resumen:
A preconcentration on-line system composed of flow injection (FI) and aknotted reactor (KR), associated with inductively coupled plasma atomic emissionspectrometry (ICP-AES) has been used to determine Zn concentrations in riverwater. The zinc was retained as Zn-2(5-bromo-2-pyridilazo)5-diethylaminofenol precipitatedcomplex on the knotted reactor (KR). The limit of detection (0.09 mg L21 ofZn) of this method makes it particularly suitable for hydrochemical exploration in geologicaland environmental projects. This application has been validated in the volcanogenicgold (copper, zinc, lead) deposit of La Carolina in the province of San Luis,Argentina. The Carolina Stream and the Grande River have been sampled for waterdownstream this deposit. The regional background in river water is 2 mg L21. Sixtimes this concentration has been observed at more than 6.5 km from the source, LaCarolina mine.
